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import Tone from 'tone'
import { lerp, choice } from './util'
import output from './output'
const player_count = 2
const filter_count = 3
const notes = [299, 336, 374, 399, 449, 498, 561, 598].map(i => i/2)
const reverb = new Tone.Freeverb({
roomSize: 0.2,
dampening: 12000,
}).connect(output)
const crossfaders = []
export default class Sampler {
constructor(path, count){
this.samples = (() => {
let s = '', a = []
for (let i = 1; i < count; i++) {
const s = i < 10 ? '0' + i : i;
a.push({ root: 100, fn: path.replace(/{}/, s) })
}
return a
})()
this.samples.forEach((sample) => {
sample.players = []
sample.filters = []
sample.crossfaders = []
sample.index = -1
for (let i = 0; i < player_count; i++) {
let fn = sample.fn
if (window.location.href.match(/asdf.us/)) {
fn = 'http://asdf.us/glass/' + fn.replace('wav','mp3')
}
let player = new Tone.Player({
url: fn,
retrigger: true,
playbackRate: 1,
})
let crossFade = new Tone.CrossFade(0.5)
sample.crossfaders.push(crossFade)
let wet = new Tone.Gain(1)
player.connect(crossFade, 0, 0)
wet.connect(crossFade, 0, 1)
crossFade.connect(output)
let filter, note
let filters = sample.filters = []
for (let j = 0; j < filter_count; j++) {
note = choice(notes)
filter = new Tone.Filter({
frequency: filter_count * j * note,
Q: 5 * (filter_count-j) + 20,
})
player.connect(filter)
filter.connect(wet)
filters.push(filter)
}
// player.connect(reverb)
sample.players.push(player)
sample.filters.push(filters)
}
})
}
play(freq, time) {
const best = { sample: choice(this.samples) }
best.sample.index = (best.sample.index + 1) % player_count
const player = best.sample.players[ best.sample.index ]
const crossfader = best.sample.crossfaders[ best.sample.index ]
freq = freq || best.sample.root
time = time || Tone.now()
player.playbackRate = freq / best.sample.root
if (player.loaded) {
player.start(time)
} else {
console.log('loading')
}
crossfader.fade.value = lerp(x_pos, 0.0, 1.0)
return player
}
}
let x_pos = 0.5
document.body.addEventListener('mousemove', (e) => {
x_pos = (e.pageX / window.innerWidth)
})
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